#!/bin/bash

#####################################################
# System Health Monitor
# Author: [Numele Tău]
# Description: Verifică starea sistemului și generează raport
#####################################################

# Culori pentru output fancy
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# Header fancy
clear
echo -e "${BLUE}╔════════════════════════════════════════╗${NC}"
echo -e "${BLUE}║     SYSTEM HEALTH MONITOR v1.0        ║${NC}"
echo -e "${BLUE}╚════════════════════════════════════════╝${NC}"
echo ""
echo -e "${GREEN}📊 Generez raportul...${NC}"
echo ""

# 1. Informații sistem
echo -e "${YELLOW}━━━ 💻 INFORMAȚII SISTEM ━━━${NC}"
echo -e "Hostname: ${GREEN}$(hostname)${NC}"
echo -e "Utilizator: ${GREEN}$(whoami)${NC}"
echo -e "Data: ${GREEN}$(date '+%Y-%m-%d %H:%M:%S')${NC}"
echo -e "Uptime: ${GREEN}$(uptime -p)${NC}"
echo ""

# 2. CPU Usage
echo -e "${YELLOW}━━━ ⚙️  CPU USAGE ━━━${NC}"
cpu_usage=$(top -bn1 | grep "Cpu(s)" | awk '{print $2}' | cut -d'%' -f1)
echo -e "Utilizare CPU: ${GREEN}${cpu_usage}%${NC}"

if (( $(echo "$cpu_usage > 80" | bc -l) )); then
    echo -e "${RED}⚠️  ATENȚIE: CPU usage ridicat!${NC}"
else
    echo -e "${GREEN}✓ CPU în parametri normali${NC}"
fi
echo ""

# 3. Memorie
echo -e "${YELLOW}━━━ 🧠 MEMORIE ━━━${NC}"
mem_total=$(free -h | awk '/^Mem:/ {print $2}')
mem_used=$(free -h | awk '/^Mem:/ {print $3}')
mem_percent=$(free | awk '/^Mem:/ {printf "%.0f", $3/$2 * 100}')

echo -e "Total: ${GREEN}${mem_total}${NC}"
echo -e "Folosită: ${GREEN}${mem_used}${NC} (${mem_percent}%)"

if [ "$mem_percent" -gt 80 ]; then
    echo -e "${RED}⚠️  ATENȚIE: Memorie insuficientă!${NC}"
else
    echo -e "${GREEN}✓ Memorie OK${NC}"
fi
echo ""

# 4. Disc
echo -e "${YELLOW}━━━ 💾 SPAȚIU DISC ━━━${NC}"
df -h | grep -E '^/dev/' | while read line; do
    usage=$(echo $line | awk '{print $5}' | cut -d'%' -f1)
    mount=$(echo $line | awk '{print $6}')
    
    if [ "$usage" -gt 80 ]; then
        echo -e "${RED}⚠️  $mount: ${usage}% (PLIN!)${NC}"
    else
        echo -e "${GREEN}✓ $mount: ${usage}%${NC}"
    fi
done
echo ""

# 5. Top 5 procese (CPU)
echo -e "${YELLOW}━━━ 🔥 TOP 5 PROCESE (CPU) ━━━${NC}"
ps aux --sort=-%cpu | head -6 | tail -5 | awk '{printf "%-20s %5s%%\n", $11, $3}'
echo ""

# 6. Verificare servicii importante (opțional)
echo -e "${YELLOW}━━━ 🔧 STATUS SERVICII ━━━${NC}"

# Exemplu: verifică serviciul SSH
if systemctl is-active --quiet sshd 2>/dev/null || systemctl is-active --quiet ssh 2>/dev/null; then
    echo -e "${GREEN}✓ SSH: Running${NC}"
else
    echo -e "${RED}✗ SSH: Stopped${NC}"
fi

# Footer
echo ""
echo -e "${BLUE}╔════════════════════════════════════════╗${NC}"
echo -e "${BLUE}║     Raport generat cu succes! ✓       ║${NC}"
echo -e "${BLUE}╚════════════════════════════════════════╝${NC}"
echo ""

# Opțiune salvare raport
read -p "Salvezi raportul în fișier? (y/n): " save_choice
if [ "$save_choice" = "y" ] || [ "$save_choice" = "Y" ]; then
    report_file="system_health_$(date +%Y%m%d_%H%M%S).txt"
    $0 2>&1 | grep -v "Salvezi raportul" > "$report_file"
    echo -e "${GREEN}✓ Raport salvat: $report_file${NC}"
fi

exit 0